Crown Communications GmbH

Cloud PBX Platform

• Call Manager: A true Cloud PBX unifying IP telephony, conferencing, chat, and presence for enterprise environments.
• Multi-Tenant Architecture: Scales across complex brand ecosystems and large enterprise deployments without operational disruption.
• Auto-Provisioning & Mass Operations: Cuts rollout time by automating endpoint configuration and centralized software distribution.

Whitelabel & Partner Solutions

• Whitelabel Branding: Lets carriers and service providers launch a fully branded UCaaS product under their own name.
• Branding Themes: Aligns the platform interface precisely with each partner's corporate design and color scheme.
• Provisioning APIs: Gives partners programmatic control to build custom integrations and app solutions on top of the platform.

Unified Communications & Collaboration

• CM Mobile App: Extends full Cloud PBX and UCC features to iOS and Android smartphones for on-the-go business communication.
• Microsoft Teams & Outlook Integration: Connects Call Manager to existing Microsoft environments without replacing familiar workflows.
• CRM & OpenID Integration: Links business communication directly to external systems, streamlining operations across the enterprise.

Security & Compliance

• German Data Center Hosting: Keeps all data within certified, geo-redundant infrastructure governed by European data protection law.
• Enterprise-Grade Encryption: Protects every access level with end-to-end encryption, role-based permissions, and optional multi-factor authentication.

Crown Communications gives carriers and service providers the foundation to deliver modern, branded cloud communications, on their own terms. Since 2008, the Karlsruhe-based company has developed Call Manager, a fully in-house Cloud PBX and UCC platform built specifically for mid-sized and large enterprises and offered exclusively as a whitelabel solution.

With over 17 years of Voice over IP experience and more than 20 exclusive partners, Crown operates from a single central development hub in Germany. The platform runs in certified German data centers, meets European data protection standards, and is suited for regulated industries including finance, healthcare, and public administration.

Partners such as Gamma Communications, CNT AG, Gigaset, and Snom rely on Call Manager to power their own UCaaS offerings, each with full control over branding, customer relationships, and product direction.